Is the sequence {81, 27, 9, 3, 1, …} arithmetic or geometric?

The perimeter of a stage is 116 feet. it is 17 feet wide. how long is it?

How many credit hours will a student have to take for the two tuition costs to be equal? round the answer to the nearest tenth of an hour.

Find the exact value of each of the following. in each case, show your work and explain the steps you take to find the value. (a) sin 17π/6 (b) tan 13π/4 (c) sec 11π/3